A friend who is a teacher for learning disabled kids gave me an idea when I needed one.
Spread pudding on a jelly roll pan. Have him use his finger to draw out the letters. It has something to do with learning by touch.
Good luck. Please don't let the schools make you feel like a failure,for goodness sake the boy is only 5 years out of the womb.He will learn his alphabet. Too bad the school is putting such pressure on such little kids.
I agree with Sara that the schools expect too much from kindergartener's.